I think the other 2 are near the cats underneath, you'll need to remove the plastic cover to see them.

 

I have the same problem.....
if you sort before me could you update me with answer please...or i will let you know my outcome...thanks
Dave

 

Sorry, did either you guys sort this out?

changed the snesors but likes back on

 

Not had chance to look at mine yet.
Will probably try to test the sensors in position (Resistance, Open/Closed circuit I quess)
Does anyone know what typical readings I can expect.
Kaled00 did you change just the sensor you thought was faulty.
If its still showing the same error on the engine diagnostics maybe its a fault in the wiring loom or the control box that th sensor connects to??

Need some time & warm weather to get me motivated into looking at mine.

 

Take a look here http://enginelighthelp.informe.com/jagu ... 2-dt5.html Hope it helps

 

This looks quite interesting for part numbers & info.
http://www.ngkntk.co.uk
Go to downloads to see Lambda sensors

 

Replaced lambda (n/s upstream) with universal one £35..........this still came up with the same fault code,(p16476 -open or short circuit on n/s upstream) i started thinking there could be a wireing fault but bit the bullet and bought a genuine jag lambda....hey presto the nigh on £100 cured it !!!!

 

Finally got round to sorting the oxygen sensor out.
Sounds like I went down the same road as v9djd. I bought a new sensor from ebay (£20). It was supposed to be compatable bit it did need the connector changing.

New sensor
2 white wires reading 8.2 ohms, 1 black wire o/c to everything, 1 grey wire 0.3 ohms to sensor body.

Old faulty sensor
2 black wires, 1 white wire, 1 blue wire. O/C on everything

Fitted the ebay sensor & it did not clear the fault.
Bought a sensor from the jaguar dealer (£85).
Wires as old sensor except 2 black wires read 1.2 ohms.
The new sensor from jaguar fitted, error codes reset & no warning light.
Before fitting the sensor The engine revs would fluctuate up & down by about 200 mainly for the first 10 mins of driving. Looks like that problem went away after fitting working sensor.

Now to tackle the other fault "Passenger air bag warning light" permanantly on. I will try reseating the connectors under the passenger seat & may be back on here if that does not cure it.

 

thanks alot Rough_cut_gem done roughly what u said and tested the censor had no condinunity tested the other one on the car and has 1.2 ohms across the black wires so guess the sensors knackered will get a new one tommorow as i have the p1647 fault code and failed the mot today as imissions were at 1.900 and should be lower than 0.500 and read some where that when a lamard sensor goes the ecu reads it as running lean and tries to increase it hence the immisions to high some one please correct me if im wrong thanks alot

 

It must be catching! viewtopic.php?f=16&t=47239

 

I was also reading somewhere that Jag actually recommend that these be changed at 100,000 miles anyway. Mine has done 86,000, so not too far away.

The article went on to say that with new sensors, one could expect an uplift of 10-15% on MPG. I'm hoping this is true as this will recoup the cost of the work after about 12 months for me!!

 

thanks alot Rough_cut_gem done roughly what u said and tested the censor had no condinunity tested the other one on the car and has 1.2 ohms across the black wires so guess the sensors knackered will get a new one tommorow as i have the p1647 fault code and failed the mot today as imissions were at 1.900 and should be lower than 0.500 and read some where that when a lamard sensor goes the ecu reads it as running lean and tries to increase it hence the immisions to high some one please correct me if im wrong thanks alot

I was told the same by my Indy. He went on to say that eventually it would knacker the CAT, so it's £100 well spent, when compared to the cost of a new CAT.

 

I was also reading somewhere that Jag actually recommend that these be changed at 100,000 miles anyway. Mine has done 86,000, so not too far away.

The article went on to say that with new sensors, one could expect an uplift of 10-15% on MPG. I'm hoping this is true as this will recoup the cost of the work after about 12 months for me!!

Changing the really old type was almost mandatory LOL but with the very new kind in the facelift S-Type I'm not sure there's really any good data. Can't hurt, apart from the cost, though!

Possibly this article: http://www.autotap.com/techlibrary/repl ... enance.asp although it doesn't actually cover the main ones in the facelift - it only covers the downstream type.

(The upstreams control fuelling and are of the linear aka wideband or AFR type.)

 

I think that was the article I found.

I am having both of mine changed today.

 

Hi,

I know this is an old post, I have a 1999 Xk8 giving P1647. It sounds like I should change the lamba sensor as you have.

Is there just one sensor?

Thanks
Louis